Date: Thu, 5 Aug 2021 00:34:02 GMT From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: dfe4c2024fbc - stable/13 - nfscl: Send stateid.seqid of 0 for NFSv4.1/4.2 mounts Message-ID: <202108050034.1750Y2s7095257@gitrepo.freebsd.org>
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The branch stable/13 has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=dfe4c2024fbc0df2d73bb0be71736943533b4a9a commit dfe4c2024fbc0df2d73bb0be71736943533b4a9a Author: Rick Macklem <rmacklem@FreeBSD.org> AuthorDate: 2021-07-20 00:35:39 +0000 Commit: Rick Macklem <rmacklem@FreeBSD.org> CommitDate: 2021-08-05 00:30:40 +0000 nfscl: Send stateid.seqid of 0 for NFSv4.1/4.2 mounts For NFSv4.1/4.2, the client may set the "seqid" field of the stateid to 0 in RPC requests. This indicates to the server that it should not check the "seqid" or return NFSERR_OLDSTATEID if the "seqid" value is not up to date w.r.t. Open/Lock operations on the stateid. This "seqid" is incremented by the NFSv4 server for each Open/OpenDowngrade/Lock/Locku operation done on the stateid. Since a failure return of NFSERR_OLDSTATEID is of no use to the client for I/O operations, it makes sense to set "seqid" to 0 for the stateid argument for I/O operations. This avoids server failure replies of NFSERR_OLDSTATEID, although I am not aware of any case where this failure occurs. This makes the FreeBSD NFSv4.1/4.2 client compatible with the Linux NFSv4.1/4.2 client. (cherry picked from commit 7685f8344d9a59e9498bdfebb48066f98216fecd) --- sys/fs/nfsclient/nfs_clstate.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/sys/fs/nfsclient/nfs_clstate.c b/sys/fs/nfsclient/nfs_clstate.c index 8ea5d77d2053..406dcc9d9b80 100644 --- a/sys/fs/nfsclient/nfs_clstate.c +++ b/sys/fs/nfsclient/nfs_clstate.c @@ -569,7 +569,11 @@ nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode, !NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) { if (!(mode & NFSV4OPEN_ACCESSWRITE) || (dp->nfsdl_flags & NFSCLDL_WRITE)) { - stateidp->seqid = dp->nfsdl_stateid.seqid; + if (NFSHASNFSV4N(nmp)) + stateidp->seqid = 0; + else + stateidp->seqid = + dp->nfsdl_stateid.seqid; stateidp->other[0] = dp->nfsdl_stateid.other[0]; stateidp->other[1] = dp->nfsdl_stateid.other[1]; stateidp->other[2] = dp->nfsdl_stateid.other[2]; @@ -604,8 +608,10 @@ nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode, own, own, mode, &lp, &op); if (error == 0 && lp != NULL && fords == 0) { /* Don't return a lock stateid for a DS. */ - stateidp->seqid = - lp->nfsl_stateid.seqid; + if (NFSHASNFSV4N(nmp)) + stateidp->seqid = 0; + else + stateidp->seqid = lp->nfsl_stateid.seqid; stateidp->other[0] = lp->nfsl_stateid.other[0]; stateidp->other[1] = @@ -656,7 +662,10 @@ nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode, /* * No lock stateid, so return the open stateid. */ - stateidp->seqid = op->nfso_stateid.seqid; + if (NFSHASNFSV4N(nmp)) + stateidp->seqid = 0; + else + stateidp->seqid = op->nfso_stateid.seqid; stateidp->other[0] = op->nfso_stateid.other[0]; stateidp->other[1] = op->nfso_stateid.other[1]; stateidp->other[2] = op->nfso_stateid.other[2];
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